﻿using System;
using System.Data;
using System.Data.SqlClient;

namespace MvePublicService.MapOperations
{
	/*
	 * 日本SGI株式会社
	 * ヨハンソン・ヘンリク
	 * johansson@sgi.co.jp
	 * 
	 * Change Log:
	 * ---------------------------------------------------------------------------
	 * 2009.01.07	Johansson Henrik		Class Created.
	 * 
	 */

	/// <summary>
	/// This static class provides methods for extracting, 
	/// updating and deleting Maps in the Database.
	/// Use the static methods in this class to perform  
	/// Map related operations on the Database.
	/// </summary>
	/// <remarks>INSERT:Creds</remarks>
	internal static class MapManipulator
	{
		/// <summary>
		/// Get the users map from the DB.
		/// Original Name = LoadMap
		/// </summary>
		/// <remarks>Done</remarks>
		/// <param name="userDbId">Users DB id</param>
		/// <param name="connection">Sql Connection</param>
		/// <returns>A string (XML) representation of the users map.</returns>
		internal static string GetUsersMap(int userDbId, SqlConnection connection)
		{
			SqlCommand command = new SqlCommand();
			SqlDataReader reader = null;
			command.CommandTimeout = 60;

			string result = string.Empty;
			try
			{
				command.Connection = connection;
				command.CommandType = System.Data.CommandType.StoredProcedure;
				command.CommandText = "GetMap";

				command.Parameters.Add("userId", SqlDbType.Int).Value = userDbId;

				reader = command.ExecuteReader();

				if (reader.HasRows)
				{
					reader.Read();
					result = reader.GetString(0);
				}

			}
			catch (NullReferenceException ex)
			{
				MvePublicService.ErrorHandler.LogMessage(ex.Message, false);
				result = string.Empty;
			}
			catch (SqlException ex)
			{
				MvePublicService.ErrorHandler.LogMessage(ex.Message, false);
				result = string.Empty;
			}
			catch (InvalidOperationException ex)
			{
				MvePublicService.ErrorHandler.LogMessage(ex.Message, false);
				result = string.Empty;
			}
			catch (IndexOutOfRangeException ex)
			{
				MvePublicService.ErrorHandler.LogMessage(ex.Message, false);
				result = string.Empty;
			}
			finally
			{
				command.Dispose();
				if (reader != null)
				{
					reader.Close();
					reader.Dispose();
				}
			}

			return result;
		}//end:GetUsersMap

		/// <summary>
		/// Save / Update a users map in the Database.
		/// Original Name = SaveMap
		/// </summary>
		/// <remarks>Done</remarks>
		/// <param name="userDbId">Users DB id</param>
		/// <param name="map">A string (XML) representation of the map to save</param>
		/// <param name="connection">Sql Connection</param>
		/// <returns>True if the map was saved</returns>
		internal static bool SaveUsersMap(int userDbId, string map, SqlConnection connection)
		{
			SqlCommand command = new SqlCommand();
			command.CommandTimeout = 60;

			bool result = false;
			try
			{
				command.Connection = connection;
				command.CommandType = System.Data.CommandType.StoredProcedure;
				command.CommandText = "SaveMap";

				command.Parameters.Add("userId", SqlDbType.Int).Value = userDbId;
				command.Parameters.Add("map", SqlDbType.Text).Value = map;
				command.Parameters.Add("insertDate", SqlDbType.DateTime).Value = DateTime.Now;

				SqlParameter returnValue = new SqlParameter("@RETURN_VALUE", SqlDbType.Int);
				returnValue.Direction = ParameterDirection.ReturnValue;
				command.Parameters.Add(returnValue);

				command.ExecuteNonQuery();
				int resultCode = (int)returnValue.Value;

				if (resultCode == 0)
				{
					result = true;
				}
			}
			catch (InvalidOperationException ex)
			{
				MvePublicService.ErrorHandler.LogMessage(ex.Message, false);
				result = false;
			}
			catch (InvalidCastException ex)
			{
				MvePublicService.ErrorHandler.LogMessage(ex.Message, false);
				result = false;
			}
			finally
			{
				command.Dispose();
			}

			return result;
		}//end:SaveUsersMap
	}
}
